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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/sync/invalidations/invalidator_storage.h"
#include "base/base64.h"
#include "base/logging.h"
#include "base/string_number_conversions.h"
#include "base/values.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/common/pref_names.h"
using sync_notifier::InvalidationVersionMap;
namespace browser_sync {
InvalidatorStorage::InvalidatorStorage(PrefService* pref_service)
: pref_service_(pref_service) {
// TODO(tim): Create a Mock instead of maintaining the if(!pref_service_) case
// throughout this file. This is a problem now due to lack of injection at
// ProfileSyncService. Bug 130176.
if (pref_service_) {
pref_service_->RegisterDictionaryPref(prefs::kSyncMaxInvalidationVersions,
PrefService::UNSYNCABLE_PREF);
pref_service_->RegisterStringPref(prefs::kInvalidatorInvalidationState,
std::string(),
PrefService::UNSYNCABLE_PREF);
}
}
InvalidatorStorage::~InvalidatorStorage() {
}
InvalidationVersionMap InvalidatorStorage::GetAllMaxVersions() const {
DCHECK(non_thread_safe_.CalledOnValidThread());
if (!pref_service_) {
return InvalidationVersionMap();
}
const base::DictionaryValue* max_versions_dict =
pref_service_->GetDictionary(prefs::kSyncMaxInvalidationVersions);
CHECK(max_versions_dict);
InvalidationVersionMap max_versions;
DeserializeMap(max_versions_dict, &max_versions);
return max_versions;
}
void InvalidatorStorage::SetMaxVersion(syncable::ModelType model_type,
int64 max_version) {
DCHECK(non_thread_safe_.CalledOnValidThread());
DCHECK(syncable::IsRealDataType(model_type));
CHECK(pref_service_);
InvalidationVersionMap max_versions =
GetAllMaxVersions();
InvalidationVersionMap::iterator it =
max_versions.find(model_type);
if ((it != max_versions.end()) && (max_version <= it->second)) {
NOTREACHED();
return;
}
max_versions[model_type] = max_version;
base::DictionaryValue max_versions_dict;
SerializeMap(max_versions, &max_versions_dict);
pref_service_->Set(prefs::kSyncMaxInvalidationVersions, max_versions_dict);
}
// static
void InvalidatorStorage::DeserializeMap(
const base::DictionaryValue* max_versions_dict,
InvalidationVersionMap* map) {
map->clear();
// Convert from a string -> string DictionaryValue to a
// ModelType -> int64 map
// .
for (base::DictionaryValue::key_iterator it =
max_versions_dict->begin_keys();
it != max_versions_dict->end_keys(); ++it) {
int model_type_int = 0;
if (!base::StringToInt(*it, &model_type_int)) {
LOG(WARNING) << "Invalid model type key: " << *it;
continue;
}
if ((model_type_int < syncable::FIRST_REAL_MODEL_TYPE) ||
(model_type_int >= syncable::MODEL_TYPE_COUNT)) {
LOG(WARNING) << "Out-of-range model type key: " << model_type_int;
continue;
}
const syncable::ModelType model_type =
syncable::ModelTypeFromInt(model_type_int);
std::string max_version_str;
CHECK(max_versions_dict->GetString(*it, &max_version_str));
int64 max_version = 0;
if (!base::StringToInt64(max_version_str, &max_version)) {
LOG(WARNING) << "Invalid max invalidation version for "
<< syncable::ModelTypeToString(model_type) << ": "
<< max_version_str;
continue;
}
(*map)[model_type] = max_version;
}
}
// static
void InvalidatorStorage::SerializeMap(
const InvalidationVersionMap& map, base::DictionaryValue* to_dict) {
// Convert from a ModelType -> int64 map to a string -> string
// DictionaryValue.
for (InvalidationVersionMap::const_iterator it = map.begin();
it != map.end(); ++it) {
to_dict->SetString(
base::IntToString(it->first),
base::Int64ToString(it->second));
}
}
std::string InvalidatorStorage::GetInvalidationState() const {
std::string utf8_state(pref_service_ ?
pref_service_->GetString(prefs::kInvalidatorInvalidationState) : "");
std::string state_data;
base::Base64Decode(utf8_state, &state_data);
return state_data;
}
void InvalidatorStorage::SetInvalidationState(const std::string& state) {
DCHECK(non_thread_safe_.CalledOnValidThread());
std::string utf8_state;
base::Base64Encode(state, &utf8_state);
pref_service_->SetString(prefs::kInvalidatorInvalidationState,
utf8_state);
}
void InvalidatorStorage::Clear() {
DCHECK(non_thread_safe_.CalledOnValidThread());
pref_service_->ClearPref(prefs::kInvalidatorInvalidationState);
pref_service_->ClearPref(prefs::kSyncMaxInvalidationVersions);
}
} // namespace browser_sync
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